Substitute Holidays: What Happens When a Public Holiday Falls on a Weekend

What is a substitute holiday?

A substitute holiday is a replacement day off granted when a public holiday falls on a weekend. Rather than lose the day, many countries move the holiday to the nearest weekday — most often the following Monday. The same idea is also called an observed holiday, a day in lieu, or, in the Commonwealth, mondayisation.

The distinction matters because the calendar date of a holiday and the date it is actually observed can differ. When the United States' Independence Day (4 July) falls on a Saturday, as it does in 2026, federal offices close on Friday 3 July instead. The holiday is still "the Fourth of July" — but the day off moves.

Why substitute holidays exist

Public holidays serve two purposes: they mark a date of national significance, and they grant a statutory day of rest. When the marked date lands on a Saturday or Sunday — days most people already have off — the second purpose is defeated. Substitute-holiday laws restore the lost day of rest by shifting the paid day off to an adjacent weekday.

Not every country does this. The choice reflects a policy trade-off: substitution guarantees a fixed number of rest days per year but adds unpredictability to the calendar; no substitution keeps the calendar simple but means workers lose a day off in years when the holiday falls badly.

The terms, disambiguated

In practice these overlap heavily: a substitute holiday is observed on a weekday, and an employee who works it may receive a day in lieu.

How the major systems work

The rule is set by national law and varies in the detail. The best-documented systems:

The countries that don't substitute

A substitute day is not universal. Across much of continental Europe — including Germany, France, Italy, Spain, the Netherlands, Austria, and Switzerland — if a public holiday falls on a Saturday or Sunday, it is simply lost: no replacement weekday is granted. A German Feiertag that lands on a weekend is worth no day off at all. This is why the number of effective days off in these countries varies year to year while the list of holidays stays fixed.

This single rule is the most common source of confusion when comparing "how many public holidays" two countries have: a headline count of 13 holidays yields fewer actual rest days in a no-substitution country than in a mondayising one.

Substitute and observed holidays recorded for 2026

The table below lists the public holidays that our 2026 dataset records with an official observed date — that is, holidays that fell on a weekend (or otherwise clashed) and were assigned a replacement day by the relevant government. It reflects the specific weekend clashes that occurred in 2026, not every country whose law permits substitution: a mondayising country with no weekend clash in 2026 will not appear here.

Sixteen countries recorded an official substitute or observed date in 2026. Every date on this site's country and holiday pages reflects the observed date where one applies, so the day shown is the day offices actually close.

Frequently asked questions

Do you get the Monday off if a public holiday falls on a Sunday?

In countries with substitution laws — the UK, US, Australia, New Zealand, and much of the Commonwealth — yes: a Sunday holiday is typically observed the following Monday. In countries without them, such as Germany or France, no: the holiday is lost with no replacement.

What is the difference between a substitute holiday and an observed holiday?

They describe the same event from two angles. The observed date is the day the holiday is actually taken; the substitute holiday is the replacement weekday that becomes the observed date because the original fell on a weekend.

Which countries do not give a day off when a holiday falls on a weekend?

Most of continental Europe, including Germany, France, Italy, Spain, the Netherlands, Austria, and Switzerland. In these countries a public holiday that falls on a Saturday or Sunday grants no substitute weekday.

Is a substitute holiday a separate public holiday?

No — it is the same holiday, observed on a different day. It does not add to the total number of holidays; it moves an existing one so the day of rest is not lost to the weekend.

What is mondayisation?

Mondayisation is the Commonwealth term for the rule that moves a public holiday to the following Monday when it falls on a weekend. New Zealand's Holidays Act 2003 uses the term explicitly for holidays such as Waitangi Day and Anzac Day.

Sources

• United Kingdom — Banking and Financial Dealings Act 1971 / gov.uk bank holidays
• United States — 5 U.S.C. §6103, U.S. Office of Personnel Management
• New Zealand — Holidays Act 2003, Employment New Zealand
• Australia — Public holidays, Fair Work Ombudsman
• Ireland — Public holidays, Citizens Information

Related: public holidays by country, bank holidays, and how we source and verify holiday data.